General Electric Company

Robert Christie Galloway

Edward James Balaschak

Job Thomas Rijssenbeek

Raymond R Cole

Manikandan Ramani

Jonathan Adam Bielik

Charles Dominic Iacovangelo

Michael Alan Vallance

Roger Neil Bull

James Lowe Sudworth

Guillermo Daniel Zappi

Jinghua Liu

A cell cathode compartment comprises a granule bed comprising metal granules, metal halide granules, and sodium halide granules, a separator adjacent to the granule bed, a liquid electrolyte dispersed in the granule bed, and a porous absorbent disposed in the granule bed, wherein a transverse cross-sectional distribution of the porous absorbent in the granule bed varies in a longitudinal direction from a first position to a second position. In another embodiment, a cell cathode compartment comprises a granule bed comprising metal granules, metal halide granules, and sodium halide granules, a separator adjacent to the granule bed, a liquid electrolyte dispersed in the granule bed, and a porous absorbent coating on a surface adjacent to the granule bed.

Porous absorbent for sodium metal halide cells

A positive electrode composition is provided. The positive electrode composition includes at least one electroactive metal selected from the group consisting of titanium, vanadium, niobium, molybdenum, nickel, iron, cobalt, chromium, manganese, silver, antimony, cadmium, tin, lead, copper, zinc, and combination thereof, an alkali metal halide, and aluminum, present in an amount of at least 0.5 weight percent, based on the weight of the positive electrode composition. Optionally, an amount of sodium iodide of up to about 1.0 weight percent, based on the weight of the sodium halide in the positive electrode composition, is included. The composition may be included in a positive electrode with a molten electrolyte salt comprising the reaction product of an alkali metal halide and an aluminum halide. An energy storage device including the composition is provided, as well as a method of operating the device.

Composition, energy storage device, and related process

An electrochemical cell is presented. The cell includes a housing formed of a metallic material. A component is disposed within an anode compartment of the cell that contains an alkali metal. The component comprises a sacrificial metal that has an oxidation potential less than the oxidation potential of the housing material. An energy storage device including such an electrochemical cell is also provided.

Electrochemical cell

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Derbyshire, United Kingdom

Robert Christie Galloway